diff --git a/collects/tests/mzscheme/unit.ss b/collects/tests/mzscheme/unit.ss
index a40d7b6..ecec74b 100644
--- a/collects/tests/mzscheme/unit.ss
+++ b/collects/tests/mzscheme/unit.ss
@@ -130,7 +130,7 @@
 (syntax-test #'(compound-unit (import) (link (a (b))) (export (a (x)))))
 (syntax-test #'(compound-unit (import) (link (a (b))) (export (1 w))))
 
-(test unit? (compound-unit (import) (link) (export)))
+(test #t unit? (compound-unit (import) (link) (export)))
 
 ; Simple: